While locally transmitted infections in China have mostly declined, authorities are concerned about cases involving travelers who have caught the virus abroad, stepping up health screening and quarantine protocols and even reducing the number of international flights and barring entry to most foreigners.

Of the new imported cases reported on Monday, 10 were in northern China’s Inner Mongolia region involving travelers whose flights were diverted from Beijing to Hohhot, Inner Mongolia’s capital city, in recent days, according to state media.